Blender python : where is bpy module located in windows 10
The bpy module is Blender itself. It's automatically available inside Blender because when it starts the Python interpreter it also registers itself as a Python module.

If you want to load bpy as a module outside of Blender, you'll have to recompile Blender yourself. The old Wiki has instructions on this. Basically, it's like a normal build of Blender, except you set those CMake config variables:

WITH_PYTHON_INSTALL=OFF
WITH_PLAYER=OFF
WITH_PYTHON_MODULE=ON